Interlochen Center for the Arts ballet dancers from the 60s were recently reunited with dresses used for a special performance. Amanda Lifvendahl is a pro at making old things new again.

As hard as it is to overstate the scope of Twyla Tharp’s choreographic career — she started making dances as a postmodern rebel in the 1960s and “crossed over” into ballet virtuosity in the 1970s — it ...